An anklet is crystal jewelry that can be worn on one or both ankles. Buy them online from our range of crystal anklets. Available in Black Tourmaline, Black Onyx, Black Obsidian, Red Jasper, Hematite, Tiger Eye. Stone anklets can be used for protection, grounding, and to ward off negative energy. In ancient Egypt, the stone used in the anklet was an indication of the level of society the women wearing it belonged to. In India, it is part of the traditional bridal dress.